Calculators to help you out. To see what it takes to build a nearly indestructible 'Glide, we paid a visit to Century Transmission in Richmond, Texas as they put The Purp's trans together. Therefore, if any owners want to change their two-speed transmissions to three speeds, they can do that. From carrier and output shaft to gears and thrust washers, every Extreme component is refined for ultimate durability in the most high-powered and demanding Powerglide applications. Required fields are marked *. The Powerglide is a two-speed automatic transmission designed by General Motors. To learn more, view our For the most part, series numbers can be determined by your gear ratio, with 2.73 and lower rearend gear ratios falling in the 2-Series, 3.08 to 3.90 rearend gear ratios falling in the 3-Series, and 4.10 and higher rearend gear ratios falling in the 4-Series. Holden vehicles fitted with Chevrolet V8 engines used the 1.76 ratio gear-set. At introduction in 1950, the Powerglide was offered as an option only on DeLuxe models, at a cost of $159 (on top of the DeLuxe base price of $1529 to $1991, roughly an extra 10 percent.) Modern Dexron fluid works fine in a Powerglide transmission. I am thinking about going to 28" tall slicks under the car. Apparently, the transmission wasn't very durable, since it depended on the driver's ability to shift between gears in a way that wouldn't damage the unit. Use our simple Gear Ratio Calculator to quickly find the correct gear ratio for your ring and pinion gear set. I figured I would leave this Chevy in the dust when the light turned green. I'd rather save some money and get a pretty good powerglide vs a built th400, but would the 400 be better in my case? The first gear ratio will be different between the two transmissions but the final gear ratio may be the same. Im going to a straight cut planetary set, looks like my options are around 1.80 or 1.69 1st gear ratios. How Do You Identify The 2 Speed Powerglide Gear Ratios? The Fora platform includes forum software by XenForo. Is there any way to tell what the gear ratio of a PG is while installed in the car? Many Street Stocks, I.M.C.A. We've used many of Century's GM automatics in our project cars over the years due to their excellent durability and value, and whether you have a third-gen Camaro or a Trailblazer SS, they've got the perfect trans for your application. The Sonnax 1.58 delivers tunable control for Powerglides right at the start, when traction can make or break a race. Hotrodding is much more than just owning a hotrodIt is a state of mind! The eight-cylinder engines used a 1.76:1 low gear and 1.00:1 high. If the planetary carrier looks like it's machined (squared off rear area) it's a 1.76. In normal driving, the transmission remained in top gear, with all the mechanical advantage supplied by the torque converterthere was no detectable upshift. The store will not work correctly in the case when cookies are disabled. Generally a.c. cars had a lower gear ratio. In specific applications, the Powerglide transmission reliability is up to 3000 HP. A two-speed planetary gearset with a first-gear ratio of 1.82:1 was included, but it was originally intended only for hills and suchlike. If the mark on the input shaft turns 1 13/16 turns and is pointing towards 10 oclock, it would be a 1.82 ratio. For the 1968 model year, Chevrolet introduced a semi-automatic version of Powerglide marketed under the name Torque-Drive. . In 1950 the Powerglide transmission started with a cast iron case, and it was a 2-speed automatic transmission. High-quality materials combined with an advanced heat-treating process results in incredibly tough, wear-resistant gears. Never any leaks from these either. There was no sump or pan on the bottom, and instead of a one-piece aluminum case, the Powerglide used a collection of cast-iron housings that bolted together. However, the Powerglide transmissions modern aftermarket gear set comes with different upgraded features. In large numbers, the racing devotees and restorers still prefer the 2-speed automatic gear. Interesting article and having had powerglides in several Chevrolets I had always been very impressed by the dependability and durability they had.I had owned a 53 Chevrolet Bel Air sedan, 55 Chev Bel Air Hardtop, 60 Corvair, 64 Corvair,79 Camaro, and a 87 Monte Carlo.Never any trouble with any of these. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. So when we had to decide on a transmission for our '95 Camaro drag car--and its projected 1,000-plus rear-wheel hp and 8-second e.t. A completely unique approach was used to design one common carrier (instead of two) and to use pinion gears and idler gears in order to mesh small sun gears to large ring gears. The 1.82 gear set is not suitable for most drag racing applications as its power limit is no more than ~ 550 HP engines in even lightweight cars. The input shafts are different lengths also. First gear at 2.52 ratio and second gear is 1. . Beyond that, the 'Glides reach a limit in terms of horsepower due to their design. This is what we will try to figure out. A heavy duty version of Aluminium Powerglide was offered for passenger cars equipped with the 409 cubic inch V8 engine, and Chevrolet light trucks using a 1.76:1 reduction planetary gear set, instead of the usual 1.82:1. Join now! VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Whether your Powerglide transmission ratio is 1.76 or 1.82, its crucial to know. eliminated. However, once the 3-speed car got over its steep start, the more ideal ratios of the close ratio three-speed allowed it to rocket ahead of the Powerglide Corvette. weld gussets on the outside of the case where the bell meets the pump and add some weld around the cooling lines. Its bulletproof, simple and easy to customize, he says. Fast and faster. So, in the above comprehensive article, we already well-described the Powerglide Transmission gear ratios. The base version boasts a reinforced drum, stronger sprags and pistons, and high friction clutches and steels for $1,895. The Torrington in the 1.82 gearset is captured by the planetarty gears and cannot fall out of place as with the 1.76 Torrington. At the top of Century's transmission heap is the 4L80E. GM Trans Options TCI Powerglide Transmissions 73250431 Automatic Transmission, Reverse Shift Pattern, Trans-Brake, Full Manual Valve Body, Chevy, Powerglide, Each Part Number: TCI-73250431 Not Yet Reviewed Estimated Ship Date: Wednesday 3/1/2023 (if ordered today) Drop Ship Free Shipping Special Order $4,994.95 Add To Cart Compare Wish List On the other hand, the stronger gear ratio is 1.76. For today's heavy cars, the 4L60E's 3.06:1 First gear ratio makes it a very popular choice. . Using the shifter, the rider chooses the speed in 3 gear transmission. The 1.76 (8-cylinder) has a silver color due to it being fully machined. With a higher stall converter, the ratio can be smaller, making a rear gear able to be a higher gear for more top end. This is not a pretty sight if it occurs and it will eat up the gears. Holden vehicles fitted with Chevrolet V8 engines used the 1.76 ratio gear-set. To make calculating planetary gear ratios as simple as possible, note the number of teeth on the sun and ring gears. A forum community dedicated to hot rod owners and enthusiasts. 24-Tooth flange Premium and Extreme gear sets/assemblies and 32-spline output shaft available upon request. Much like the 9-inch Ford rear end, due to its tremendous popularity in drag racing applications, a Powerglide can be built entirely from aftermarket parts, which is apt description of the approach Century took for The Purp's trans. JavaScript is disabled. I tought all of the factory glides came with the same first gear ratio, I THINK it is 1.73 to 1 or something close to that. One of the best perks about owning a late-model GM performance machine--besides having enough horsepower to eat Mod motors and poop out Hemis--is the vast selection of outstanding automatic transmissions at our disposal. ring gears, HELICAL Step 3:In this step, turn the input shaft and ensure the output shafts mark comes with a complete revolution. Powerglide (OEM) 1.82: 1.00: N/A: N/A: Powerglide (TCI) 1.65: 1.00: N/A: N/A: Powerglide (TCI) 1.80: 1.00: N/A: N/A: Powerglide (TCI) 1.92: 1.00: N/A: N . Its 2.74 First gear makes it a great overal transmission. This is a problem when converting the '54 rear ends to 3.55:1 using the ring and pinion sets available from Patrick's. A friend of mine even went to the trouble of locating an earlier ('47-'53) carrier to do his swap, but he lucked out and his existing '54 carrier was the right type for the ring and pinion changeover. . The starting-line ratio is a combination of the first-gear transmission ratio multiplied by the rear-end gear ratio. The 4L80E is larger and heavier than the 4L60E. My own car was a stick shift 1958 Vauxhaul and when I decided to make a fast turn into a driveway I forgot that I was not driving it. Photo below courtesy of ATI Performance Products. The constants in decoding the trans ID number are the date the transmission was produced. Weve Answered Perfectly!Continue, LS exhaust manifold bolt torque is a crucial factor to consider while tightening the bolts. AquaTraction Vs SeaDek: Which One Is Better For you? Although it is a very old design, the Powerglide still has a strong following in drag racing due to its strength and simplicity. Make sure you turn the adjustment bolt tightly. Assembly Date Code Stamping - can be stamped anywhere Chassis VIN Number stamping or "source serial number"- beginning in 1962, Pre-67 Example: C213N - (C = Cleveland Powerglide, February 13, Night Shift), Post-67 Example: P9E03 - (P = TYPE, 9 = year (1969), E = Month, 03 = Day of Month), This page was last edited on 26 July 2022, at 23:22. The Powerglide continued to serve as Chevrolet's main automatic transmission through the 1960s, when a new three-speed automatic transmission called Turbo-Hydramatic 400 (1965 introduction) began to be phased in. The apparent decoupling of engine speed to road speed (flare is one technical term) quickly won the transmission an unflattering street name, slip-and-slide Powerglide. (In a similar way, the Dynaflow became known as the Dynaslush.). Now while . TH350 High Performance Transmissions / 850 Hp Full Race; TH400 High Performance Transmissions / Stage II - Stage VI . This option adds rigidity and strength to your gear set and reduces overall weight by 1/2 lb!

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